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authorHeiko Carstens <heiko.carstens@de.ibm.com>2006-07-03 00:24:38 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-03 15:27:02 -0700
commitcbbd1fa72d22896332301ca7e6b7164284be105c (patch)
treea041ce22738c56b189aa1251ccc7e232385bb4a1 /arch/s390/Makefile
parent8637c09901049f061b94f684915d4f18ecf91d79 (diff)
downloadlinux-linaro-android-cbbd1fa72d22896332301ca7e6b7164284be105c.tar.gz
[PATCH] lockdep: s390 CONFIG_FRAME_POINTER support
CONFIG_FRAME_POINTER support for s390. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/s390/Makefile')
-rw-r--r--arch/s390/Makefile5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index b3791fb094a..74ef57dcfa6 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -34,6 +34,11 @@ cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5)
cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
+#
+# Prevent tail-call optimizations, to get clearer backtraces:
+#
+cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
+
# old style option for packed stacks
ifeq ($(call cc-option-yn,-mkernel-backchain),y)
cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK